Wells Score for Pulmonary Embolism

The combination of a low score by the simple clinical prediction rule and a negative D-Dimer result may safely exclude pulmonary embolism in a large proportion of patients with suspected pulmonary embolism.

Clinical signs and symptoms of DVT (minimum of leg swelling and pain with palpation of the deep veins).

+3

NoYes

An alternative diagnosis is less likely than PE

+3

NoYes

Heart rate greater than 100

+1.5

NoYes

Immobilization or surgery in the previous four weeks

+1.5

NoYes

Previous DVT/PE

+1.5

NoYes

Hemoptysis

+1

NoYes

Malignancy (on treatment, treated in the last six months or palliative)